Engine.



IVI) FISCHER'.

ENGINE.

APPLICATION FILED' MIIB. ZI, 1914.

I,I%,IBII Patented Dec.14,1915. j

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MARTIN FISCHER, OF ZURICH, SWITZERLAND, ASSIGNOR TO -MOTOR .AND GEAR IMPROVEMENT COMPANY, A.

CORPORATION OF NEW YORK.

ENGINE.

Specification of Letters Patent. Patented Dec. 1ML, 1915.

Application filed March 21, 5191.41... Serial No. 826,177.

Taell whom it may concern: Y

Be it known that I, vlLaR'riN Fiscnn, a citizen of Switzerland, and a resident of Zurich, in the Canton -of Zurich, Switzerland, have invented certain new and'useful Improvements in Engines-of which the fol- .lowiny is a siecification reference bein@ D 7 2j had tothe drawings hereto :attached and made a part hereof.

My invention relates to engines and more ,particularly lvinternal combustion engines,

or such in which the coiidit-ions requiring valves and valve control require sipecial con struction for improved conditions of operation of the engine.

Anion-g'the-obJects of my invention are to produce a structure to effect more perfect operation of slide valves in internal com bustion engines, as well as to insure reliability, 4noiseless operation 'and other advantages as will hereinafter appear.

I have heretofore filed application for United States patent Jan. 12, '1912, Ser. No. 670,90at, in which I have shown a construction containing theessential elements of an engine, andv of which the present invention is an improvement or modification. In particular,by the present improvement, I produce' a structure -still further insuring the uniform and accurate control of the slide valves as hereinafter described.

lVhile the invention is 'particularly set l forth in the claims 'hereto annexed I have shown ,one form-of embodiment of my invention in the accompanying drawings, in

. 'which- Figure l isa sectionlof an engine through thelongitu'dinal axis ofl the cylinder. Fig.

- 2' is'a transverse section of the cylinder at i iacket- J, and having a -locking"nut or ring 2 2 of Fig. 1. Fig. 3 is asection at 3.-'-3 of the lower end of. theslide Valve.

In the drawin s, A'is a cylinder; B a 'is aprojection on the cylinder head or rentrant ring; D is a packing ring` on the 'projection C, which may be tei'rned a junk-ring; E are slide valves having pbrts F, F through the upper -ends and openings G,'.G in the lower `ends. In-tlie head B, is a spark plug surrounded by a tubular 'upward projection H ofhead B, passing' through an opening in a head K. T-he'head is fastened to .cylinder proper ist? ' by bolts with: nuts as shown, or any other desired manner, while the head-jacket QI, in-

closes the head proper B, thereby forming -the water jacket 'space around the head 0r` combustion chamber of the cylinder.

The piston L, with connecting rods and crank shaft, are in any desired forni, andopeiate so that the piston supports the valves Ii, E, on their inner face pressing them into the recesses M, M. Ports N, N, form a' passage through the cylinder wall to the recesses M, M opposite the upper ends of the slide valves E, E, 'while the openings F, F, in the valves are arranged to periodi cally register with the port openings.

The ring projection-C, on the lieadextends into the upper end of the cylinder, or

extends over the 'end of the valves E, E to such an extent as to support the upper ends of the slide valves. The junkring D is so arranged vthat the upper end of slide valves E, E, will engage it and beheld in place in the recesses M, M, respectively, at their upper ends.

'By this construction it will beseen that the slide valves which are let into recesses at f the sides'of the piston, are' held in these recesses notalone by the piston, but their upper ends are also held in place by the pro jection or rentrant ring on the head of the cylinder, or b v the junk ring placed on the It. vof the bell crank ar'in. lIn this'manner 'the I block which is well'oiled owing to its position in the interior of the crank case and its Jpro.\:imity to the cylinder, will have free` play by sliding backand forth in the open- Y ing G while'the bell crank arm reci rocates. Itwill be a parent that modifications 1n dimension or etail or arrangement may be made llvyt'hout departingfrom my invention,

but

`VVhat I "claim and desire by Letters Patent is i.v In aninternal Icylindenia cylinder head, an extension to Asaid head projecting intothe cylinder, a piston reciprocating in said cylinder, a rece'sslin'the'walllof the cylinder, a slide'valve combustion engine, a

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. adaptedtp slide in seid recess longitudinally of. the cyl nder, and a portion of the projection from the head adapted to-engage the ,inner side of the slide valve to hold the'end 5 'thereof in the recess.

2. In. an internal combustion engine, a cylinder, a piston, a .recess in the side of the cylinder, a slide valve inl said recess engaged byfsaidypiston, 'a rentrant projection at 16 the head end of said cylinder, extending thereinI to an extent to engage only by an are of lts circumference the end of saida slide ve'lve alnd ,holdv it in the recess, anothe are of thebircumference of said rentrant projec- 'vl tion being opposed to the inner Wall Aof the cylinder proper Without thelintervention of any movmg part.

-35'111 an lnternal combustion eng1ne,-. e

f rmnferenceof the cylinder, a; vlve adapted .to reciprocte seid recess, a projection or ring extending inwardly from the end of said cylinder and a pn cking member on the outer side of' said extension adapted to engage said slide valve and hold it in position in the recess.

4. In an internal combustion engine, a

cylinder, a port near theend of said cylin der, a'slide Valve'edepted to open and close said port, an opening in said slide valve to register with seid port, a projection from the head ,of the cylinder engaging the inner side of said slide valve and extending to e point opposite the edge of said port.

. In testimonywhereof, I have signed my naine to this specificati-on, in the presence of `two subscribing Witnesses, this 24th day of February, 1914."

. MARTIN FISCHER.

Vilitnesses: v

CARL CUBLEK, Avons? RUEcG. 

